/*
 * Copyright 2012 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package be.free.ts.contact.web;

import com.google.gwt.view.client.AsyncDataProvider;
import com.google.gwt.view.client.HasData;
import com.google.inject.Provider;
import com.google.web.bindery.requestfactory.shared.Receiver;

import java.util.List;

/**
 * @author Christophe De Blende
 * @since 08/01/13
 */
class AllContactsProvider extends AsyncDataProvider<ContactProxy> {
	private final Provider<ContactRequest> contactRequestProvider;

	public AllContactsProvider(Provider<ContactRequest> contactRequestProvider) {
		this.contactRequestProvider = contactRequestProvider;
	}

	@Override
	protected void onRangeChanged(HasData<ContactProxy> display) {
		ContactRequest contactRequest = contactRequestProvider.get();
		findAll(display, contactRequest);
	}

	private void findAll(HasData<ContactProxy> display, ContactRequest contactRequest) {
		contactRequest.count().to(new Receiver<Long>() {
			@Override
			public void onSuccess(Long response) {
				updateRowCount(response.intValue(), true);
			}
		});

		final int start = display.getVisibleRange().getStart();
		contactRequest.findAll(start / 10, 10).fire(new Receiver<List<ContactProxy>>() {
			@Override
			public void onSuccess(List<ContactProxy> response) {
				updateRowData(start, response);
			}
		});
	}

}
